* {
  margin: 0;
  padding: 0;

}

body {
  width: 100%;
  max-width: 640px;
  min-width: 320px;
  margin: 0 auto;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: #666;
  background: #dbd9d9;

}

.app {
  height: 50px;

}

.app div {
  height: 50px;
  background-color: black;
  float: left;
  text-align: center;
  line-height: 50px;
  color: #fff;

}

.app div:nth-child(1) {
  width: 8%;
}

.app div:nth-child(1) img {
  width: 16px;
}

.app div:nth-child(2) {
  width: 10%;
}

.app div:nth-child(2) img {
  width: 35px;
  vertical-align: middle;
}

.app div:nth-child(3) {
  width: 57%;
}

.app div:nth-child(4) {
  width: 25%;
  background-color: red;
}


.daohang {
  position: relative;
  height: 44px;
  background-color: red;
  overflow: hidden;
}

.left {
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 44px;

}

.left span {
  display: block;
  width: 20px;
  height: 18px;
  margin: 14px 0 0 15px;
}

.left span img {
  width: 20px;
  height: 18px;
}

.right {
  position: absolute;
  right: 0;
  top: 0;
  width: 40px;
  height: 44px;
  line-height: 44px;
  color: #fff;

}

.sousuo {
  height: 30px;
  background-color: #fff;
  margin-left: 50px;
  margin-right: 50px;
  border-radius: 20px;
  margin-top: 7px;
}

.sousuo .jd {
  position: absolute;
  top: 14px;
  left: 60px;
  width: 20px;
  height: 15px;
  background-color: aqua;
  background: url(../images/jd.png) no-repeat;
  background-size: 20px 15px;
}

.sousuo .jd::after {
  position: absolute;
  right: -12px;
  top: 0;
  content: "";
  display: block;
  width: 1px;
  height: 15px;
  background-color: #666;
}

.sousuo .fangdajing {
  position: absolute;
  left: 100px;
  top: 14px;
  width: 18px;
  height: 15px;
  background: url(../images/fangdajing.png) no-repeat -81px 0;
  background-size: 200px auto;
}


.lunbotu {
  width: 100%;
}

.lunbotu img {
  width: 100%;
}

.gongneng {
  width: 99%;
  margin: 0 auto;
  height: 16rem;
  line-height: 2.4rem;
  background-color: #fff;
  border-radius: 4px;
}

.gongneng a {
  float: left;
  display: block;
  width: 20%;
  padding-top: 0.6rem;
  text-align: center;
  text-decoration: none;
  color: #666;
}

.gongneng a img {
  width: 4rem;
}

.gongneng a span {
  display: block;
  font-size: 1.5rem;
}

.tuiguang {
  width: 100%;
  height: 15px;
}

.tuiguang .conent {
  width: 100%;
  height: 15px;
}

.tuiguang.conent.ziti1 {
  color: #222222;
  font-size: 46px;
  text-align: center;
}

.gongneng2 {


  text-align: center;
  width: 99%;
  margin: 0 auto;
  margin-top: 0.4rem;
  margin-bottom: 0.6rem;

}

.gongneng2 div {
  background-color: #fff;
  float: left;
  width: 25%;
  border-left: 1px solid gray;
  border-top: 1px solid gray;
  border-bottom: 1px solid gray;
  box-sizing: border-box;
  border-radius: 1rem;
  box-shadow: -1px 2px 1px 1px grey;
}

.gongneng2 div:last-of-type {
  border-right: 1px solid gray;
}

.gongneng2 div span:nth-child(1) {
  display: block;
  font-weight: 700;
  font-size: 17px;
}

.gongneng2 div span:nth-child(2) {
  display: block;
  font-size: 14px;
}

.gongneng2 div img {
  width: 90px;
}


.dibu {
  position: fixed;
  min-width: 637px;
  bottom: 0;
  background: #fff;
  z-index: 1;
}

.dibu a {
  display: inline-block;
  width: 19%;
  text-align: center;
}

.dibu a img {
  height: 50px;
}

.marginDiv {
  width: 100%;
  height: 3.6rem;
}